This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

Much of the U.S. will experience the cold weather, with Floridians facing the threat of frost later this week.

The polar vortex can commonly be disrupted during the winter and is known to cause an Arctic outbreak in the United States.

The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a ...

Are you over the cold yet? Astronomical winter is more than a week away, and the subfreezing temperatures on most days have ...

Swaths of the U.S. are expected to be hit with multiple intrusions of frigid air this month.

A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by ...

"Another shot of arctic air is on the way for next weekend," the NWS said.

Current forecast models show the circulation of the Polar Vortex weakening later this week into the weekend. As this occurs, ...

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

Uncertainty remains high regarding all aspects of any snowfall, and those who will be in the Midwest and Northeast should monitor forecast changes as the week progresses.

A cold front from an expanding polar vortex brought chilly temperatures to North and Central Florida. Temperatures are ...